Commit b16ff629 authored by Nicolai Stange's avatar Nicolai Stange Committed by Greg Kroah-Hartman
Browse files

x86/KVM/VMX: Don't set l1tf_flush_l1d from vmx_handle_external_intr()

commit 18b57ce2

 upstream.

For VMEXITs caused by external interrupts, vmx_handle_external_intr()
indirectly calls into the interrupt handlers through the host's IDT.

It follows that these interrupts get accounted for in the
kvm_cpu_l1tf_flush_l1d per-cpu flag.

The subsequently executed vmx_l1d_flush() will thus be aware that some
interrupts have happened and conduct a L1d flush anyway.

Setting l1tf_flush_l1d from vmx_handle_external_intr() isn't needed
anymore. Drop it.
Signed-off-by: default avatarNicolai Stange <nstange@suse.de>
Signed-off-by: default avatarThomas Gleixner <tglx@linutronix.de>
Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
parent 3131918d
...@@ -10019,7 +10019,6 @@ static void vmx_handle_external_intr(struct kvm_vcpu *vcpu) ...@@ -10019,7 +10019,6 @@ static void vmx_handle_external_intr(struct kvm_vcpu *vcpu)
[ss]"i"(__KERNEL_DS), [ss]"i"(__KERNEL_DS),
[cs]"i"(__KERNEL_CS) [cs]"i"(__KERNEL_CS)
); );
vcpu->arch.l1tf_flush_l1d = true;
} }
} }
STACK_FRAME_NON_STANDARD(vmx_handle_external_intr); STACK_FRAME_NON_STANDARD(vmx_handle_external_intr);
......
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